This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A216088 #9 Jul 22 2025 23:30:18 %S A216088 5,87,4140,433252,99827160,33093252880,18383343930862, %T A216088 12954733079950228,13465808371086175084,16679505315419165886800 %N A216088 Number of horizontal and antidiagonal neighbor colorings of the odd squares of a 6Xn array with new integer colors introduced in row major order. %C A216088 Row 6 of A216084 %e A216088 Some solutions for n=4 %e A216088 ..x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1 %e A216088 ..1..x..2..x....1..x..2..x....2..x..0..x....1..x..2..x....1..x..2..x %e A216088 ..x..0..x..3....x..3..x..4....x..1..x..0....x..3..x..4....x..3..x..0 %e A216088 ..4..x..0..x....4..x..5..x....2..x..3..x....4..x..5..x....0..x..2..x %e A216088 ..x..2..x..4....x..4..x..6....x..4..x..5....x..3..x..0....x..0..x..2 %e A216088 ..5..x..6..x....1..x..7..x....2..x..0..x....1..x..4..x....4..x..1..x %K A216088 nonn %O A216088 1,1 %A A216088 _R. H. Hardin_ Sep 01 2012